Fixed IRForTarget to handle Objective-C messages
sent to "super".

<rdar://problem/13042260>


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@180217 91177308-0d34-0410-b5e6-96231b3b80d8
<rdar://problem/13209140>

“plugin load” tries to be more helpful when it fails to load a plugin

git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@180218 91177308-0d34-0410-b5e6-96231b3b80d8
See: http://stackoverflow.com/questions/16166897/c-how-to-obtain-address-of-stdvector-object-in-lldb-xcode
The user was trying to obtain the address-of an std::vector and the experience was more painful than necessary because data formatters were kicking in for vector* objects
We got this right for libc++ - we should get it right for libstdc++ too

git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@180219 91177308-0d34-0410-b5e6-96231b3b80d8